Siemens SINUMERIK 840D sl Operating Manual page 97

...
Note
Settable zero offsets
The labeling of the softkeys for the settable zero offsets varies, i.e. the settable zero offsets
configured on the machine are displayed (examples: G54...G57, G54...G505, G54...G599).
Please refer to the machine manufacturer's specifications.
Milling
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Press the "Select ZO" softkey to select an settable zero offset.
In the window "Zero Offset – G54 ... G599", select a zero offset, in which
the zero point should be saved and press the "In manual" softkey.
You return to the measurement window.
6. Specify the position setpoints (X0/Y0) of the pocket center point or hole
center point.
7. Traverse the tool to the first/next measuring point if you are measuring
manually.
8. Press the "Save P1" softkey.
The point is measured and stored.
9. Repeat steps 6 and 7 to measure and store measuring points P2, P3
and P4.
10. Press the "Calculate" softkey.
The length, width, and center point of the rectangular pocket or diameter
and center point of the hole are calculated and displayed.
- OR -
Press the "Set ZO" softkey.
The setpoint position of the center point is stored as a new zero point
with "Set ZO". The tool radius is automatically included in the
calculation.
Setting up the machine
2.6 Measuring the workpiece zero
97